Easy Star Lessons (Classic Reprint)
Description:... Excerpt from Easy Star Lessons The maps are arranged in sets of four, shewing what stars can be seen towards the north, towards the south, towards the east, and towards the west, at a certain convenient hour during every night in the year. This hour varies, night by night. On January Ist, the hour at which the stars shown in the first four maps can be seen in the position shown, will be a quarter past nine in the evening; on January 2, about eleven minutes past nine; on January 3, about seven minutes past nine, and so on, earlier and earlier each night; on January 5, at nine; January 8, at a quarter to nine; January 12, half-past eight; January 16, a quarter past eight; January 20, eight o'clock January 23, a quarter to eight; January 27, half past seven; and January 31, a quarter past seven and so forth.
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